Molding die



March 16 1926.

1,576,642 J. w. BISHOP Momma DIE Filed April 20, 1923 5.9 5f 6,67 6'6710 I7/ 7g /*l|| f/ zz 4 lagf 43a 4 l 'l x2- 46.)

6a n l /5 l-: 26 |'I// j//g7 fg 65 .4Z 56 9 66 Imm Patented Mar., 16,wild,

"curr errar@ Arena" oFFlcef JSEPH W. BESEIQP, F MUSKEGON, MICHIGAN,ASSIGNOR '1*0 THE BRUNSWICK-BALB 'COLLENDER @@MPANY, @E WELMINGTN,DELAWARE, A 'CORPQEA'LION QF DELA WARE# MQLDENG DIE.

Application nien nprila, 1923. Serial No. $33,642.l

' To all whpm it may concern:

Be it known that I, JOSEPH W. BISHOP, a citizen ofA the United States,residing at Muskegon, in the county of, Muskegon and 'State of Michigan,have invented certain new and useful Im rovements in Molding Dies, ofwhich the ollowing is a specification. I

The main object of my invention is to provide an improved molding diefor the manufacture of phonograph records or the like which isespecially adapted to be used in connection with -a moldlng press, onetype of which is shown and described 4inrny copendingapplication,`Serial No. 622,838,1iled March 5, 1923.

Other objects of my invention are to provide a molding die of thecharacter described which has improved means for forming cen= teringapertures in'ithe honograph records molded thereinwhich 1s adapted tomold` centering apertures of improved form in the' phonograph records,the centering apertures preferably resemblin scribedin my co-pen ingapplication, Serial No. 633,463, filed under even date herewith; a whichhas improved means for ejecting the completed product from vthe die; andin which the matrices are secured to the die members b vimproved means.

Other o jects of my invention will become apparent as the detaildescription proigresses, reference being had .to the accom-1 panyingdrawing, wherein 1 is a central section through a molding ie the disktype, the molding die thus shown embodying the novel features of myinvention.

Fig.- 2 is an enlarged fragmentary section taken on the same line asFig.'1.

Fig. 3 is a side elevation, partly 1n secn tion, of .one ofthe matrices'of my lmproved die. Fig. 4 is a detailvieW-of a punch member of myimproved die, the punch member being` adapt/ed to form centeringapertures ot improved form in the phonograph recordaj ig. 5 is anenlarged section through a phonograph record, showing a` centeringaperture of improved form..

lin the drawmg, the reference characters 10 and 11 designate the upperand lower die members respectively et my improved moldu that shown andde' for molding phonograph records or' ing die, nach of the die members10 and 11 has a plurality of cdncentric channels 12,

whereby the die may be alternatel heated and cooled through the medium oheating andv cooling fluids supplied to the die for a purposeand bymeans well known to those skilled in the art.

The channels 12 are formed in plates 13 and 14 of the upper and lowerdie members 10 and 11 respectivel each of the plates 13.

and 14 being provi ed with a cover plate 15, which forms one wall of thechannels 12. The lower member 11 of the die may be mounted upor. theplunger of a hydraulic the'press, and heat insulated therefrom by anasbestos ad 19. For the ypurpose of this disclosure t e platen 18 ma beconsidered a part o f the upper die mem er 10.

The upper and lower die members 10 and 11 are provided with matrices 20and 21 respectively. The matrix 20 has its outer edge a clamping ring 22which is engaved b o liold the matrix 20 firmly in place adapted to uponthe plate 13, a locking ring 23 which. makes threaded en agement withthe plate 13 serving to rigi ly secure the clamping ring 22 to the plate13. The lower die member 11 is also provided with a clamping ring,

and a locking ring, as indicated 'at 24 and 25 res ectively. Theclamping ring 24 and the loc ing ring 25 cooperate to firmly hold thematrix 21 1n place upon the plate 14. It willv be noted that the claming rings 22 and 24 .are adapted to forni t e outer circular edges ofthephonograph records, which may vbe molded inthe die, for when a moldablecompound is placed between the die members 10 and 11 and the die membersare brought into pressing engagement as shown in Fig. 2, the clampingrings will be brought into close proximity.

Each of the matrices 20 and 21 is centrally apertured as'at 26 and 27respectivel the apertures having diameters substantial y e ualing thoseof a air oflabel depressing disks 28 and 29. T e label depressi-ng'dis28 is associated with the late v13, which ys provided `with a threadedole 30 ada ted to receive a threaded cylindrical boss 3l ormed loospondingly beveled wall of the opening 27. in the matrix 21. It isreadily understood that by reason of the interfitting engagement betweeneach of the disks 28 and 29 and the matrices 20 and 21, respectively,to-

gether kwith the studs or bosses 31 and 32,l

the label depresing disks 28 and 29 serve to hold the central portionsof the comparatively thin matrices 20 and 21 firmly in place against theplates 13 and 14 respectively.

i Thusthe major In- Fig. 5 I have shown an enlarged central sectionthrough a disk phonograph record, such as is shown and described in myaforementioned co-pending application of even date herewith, and whichmay be molded in my improved molding die. The record is designated inits entirety by the reference character 38 andis provided with acentering aperture 39 having a cylindrical surface 40. The cylindricalsurface 40 is joined to the plane surfaces of the record by apluralityof frustro conical surfaces 41 and '42. It will be noted that portionsof the frustro Iconical surfaces 41 and 42 are formed by parts of a pairof labels 43 and 44. The identifying labels 43 and 44 are similar tothose usually affixed to phonograph records of the disk type. It ispreferable, as shown, to have the major portion of each of the labels 43and 44 depressed below its associated sound reproducing surface. ortionofthe label 43 is. depressed below t e sound reproducing surface 45, andthe major portion of the labe] 44 is depressed below the soundreproducing surface 46. The means for so depressing the labels 43 and 44are, of course, the label depressing disks 28 and 29. The functions ofthe label depressing disks 28 and 29 are well illustrated in Fig. 2, inwhich figure the die members are shown in pressing engagement with amoldable compound between the members, as indicated at 47.

As means for forming the centering aperture 39 I provide the lower diemember 11 with a punch pin 50. The punch pin has a threaded shank 51, bymeans of which the punch pin is rigidly secured to the label depressingdisk 29, the head portion 52 of the punch pin being provide-d with asocket 53 to admit insertion of a suitable tool when the punch pin isbeing threaded into the label depressing disk 29. The socket 53 isfilled with solder, or the like, after the punch pin 50 has beenproperly secured "to the label depressing disk 29.

The head 52 of ,the punch pin 50 is in alignment with and is adapted toenteran aperture 55 of the label depressing disk 28, a cylindricalsurface of the head'52 snugly fitting within asimilar surface ofthe'aperture 55. rl`his cylindrical surface of the head 52 is adapted toform the centering aperture 39 of the phonograph record l38 which may bemolded from the moldable compound 47. The punch pin 50 is also provided,with a beveled collark 56 to form the 'frustro conical surface 42 ofthe record 38, the frustro conical surface 41 of the record being formedby a bevel 57 turned u on the label engaging face of the disk 28.

he bevel 57 is disposed concentrically with the aperture 55 of kthelabel depressing disk 28 and is adapted to function as a cutting diewhen the head 52 of the punch pin 50 enters the aperture 55. As the diemembers 10 and 11 are brought into pressing enga ement the punch pin 50with the ald of t e cutting edge of the bevel 57 will punch and cut outa button of the moldable compound,

as isindicated at 58 in Fig. 2. The punch pin 50f forces the button 58into the aperture 55, therebydisplacing from its normal position anejector pin 59, which has one end thereof slidably journaled in thelabel depressing disk 28. In its normal position the ejector pin 59rojects from the label engaging surface oi) the disk 28, it beingyieldably held in this position by means of a helical compression spring60, Wound around the ejector pin 59. One end of the compresionspringff60 rests against a collar 61 turned upon the ejector pin 59, andthe other end thereof rests against an apertured collar 62 threaded intothehole 30 of the plate 13. The apertured collar 62 serves to slidablyjournal the upper end of the ejector pin 59. A pin 63 rigidly secured inthe ejector pin 59 has its ends riding in a slot 64 which is cut intothe threaded Cylindrical boss 31 of thev label depressing disk 28. Thepin 63 limits the downward movement of the e'ector pin 59.

j Supported y the ejector pin 59, and slidably journaled in the platen18 is a block 65 having an inclined surface 66 which is adapted to beengaged by a similarly inclined surface 67 of a plunger 68 also slid-.molding operation, the inclined surface66 of the block y65 willapproach the inclined surface 67 of the plunger. Thev means for holdingthe plunger 68 in its attenta normal position comprises' a nhelicalcoinpression spring 70 wound around the plunger. The helical compressionspring 70l1as its inner end resting against the platen 18 and its outerend resting'against acollar 71- Which is pinned to the shaft, andwhichis 'also adapted to engagea stop 72 rigidly -secured to the platen 18.

The helical compression spring 60, which is associated with the ejectorpin 59, is designed to eject the button 58 it the button does not expandto such an extent as to actually sieze the wall of the aperture 55. In`the event that the ,newly formed recor tends to adhere to the matrix 20when `the-dies are separated lafter afmolding oper- *record 'from thematrix 20, as deformation of .the still flexible record disk'would theno'ccurf.v However, the record disk rapidly stitfens, and'it-isf-apparentthat the operator. may push inwardly upon the plunger l68,. so that itsinclined' surface 67 will engage the inclined surface 66 of the block65, thus forcibly driving the block' 65 andI the ejector pin 59.downward. The button 58 and the newly formed record will thenbedisplaced relative'to the upper die member 10. ff',

.In the `o eration of the device, vthe operator first p aces the' labels43 and 44 in the die, the dije members 10, and llhavingbeen spaced from`eachother-"to permit removal Yofthe linished'- product of the last preyceding operation. vOne of the labels'is een;

tered upon the ejector pinl 59 and the other v of the ylabels iscentered upon the punch "pin 50.; A quantity of the 4moldable compound47 which has been Vsuitably prepared is then placed between the diemembers 1Q and 11. The diemembers are brought into pressing engagementimmediately by the mechanism of the molding press, of which 'they form apart. Any excess of 'moldable compound is squeezed out between theclamping rings 22 and 24, thus forming a iin which the operator mustlater remove. Asthe die members 10 and 11 are being brought out ofpressing engagement by the mechanism of the molding press, the ejectorpin I59 will usually function tp eject the button 55 and to remove thenewly'formed record .fromthe matrixv y20 if Vit so happens--A .60 lhereinbefore, it maybe necessary at times.

that'jthe newly formed record adheres to this matrix. But as has beenexplained for the operator to actuate the ejector pin through the mediumof the manually operated plunger 68.l After the die members 10 and 1lhave been brought to spce'd` posi Y tions, the operator removes thecompleted product and inserts the -labels for the next operation.

l arnraware that changes in the term, con-4 struction and arrangement ofparts may be made without departing from the spirit and Withoutsacrificing the advantages ,of the invention and l reserve ythe right tomake all such changes as fairly fall Within the scope ont the followingclaims:

l claim: f

records or the like, an Iejector pln s lidably journaled in the die,yielding means for holding the ejector pin in an extended posi tionrelative to the'die, a manually operablev plunger journaled in' the diefor actuating! the' ejector pin, and a second yielding means tor holdingthe plunger in a retracted p0si' tionl 2. In a die :tor moldingphnograph4 holding the ejector pin in an extended position relative tothe die, a manually operable plunger slidably journaled in the die foractuating the ejector pin, the axis of the plunger being disposedsubstantially normal to the axis of the ejector pin,and a secondyielding means for holding the plunger in a retracted position.

3.- In a die for molding phonograph records or the like, an ejector pinslidably.

journaled in the die, yielding means for 'holdin the ejector lpin in anextended position re ative to the die, a block restin upon the ejectorpin and slidably-journa ed in thedie, a manuallyoperable plunger fordisplacing the block 'to actuate the ejector pin, anda second yieldingmeans for holol. mg the plunger in a retracted position.

4. In a die for molding phonograph records or the like, an'ejector pinslidably journaled in the die, .yielding means for hold-ing the ejectorpin in an operative osition relative to the die va block assoclated withthe ejector pin and having an inclined surface, a plunger having aninclined surface adapted to engage the-inclined sur-face of the blockfor displacing the block to actuate the ejector pin, and yieldingmeansber for forming. a centering aperture in the record and-adapted toenteran aperture in the other member', an ejector pm slidably journaled inthe aperture of the other member, yielding means for holding the ejectorpin in an'extended pstion relative to the die, and manually operablemeans for'acturating the ejector pin.

6. In a die for molding phonograph records or the like, a member havln apunch projecting from its moldingsur ace for forming centerin aperturesin the records, a second mem er having an`- aperture adapted to receivethe moldable material displaced by the punch, an ejector pin slidablyjournaled in the aperture of` the second member, yielding means tendingto actuate the ejector pin, and separate manually operable means foractuating the ejector 7 In a phonograph record die, Ythe combination ofa die member, a matrix therein having a central aperture provided Withbeveled Walls, a label depressing member occupying said central aperture`and having its periphery beveled and fitting the beveled Walls in theopening in the matrix, said label ,depressing member projecting at theexposed face of the matrix, the periphery of the projecting portion ofthe label depressing member beingbeveled, and means for connecting thelabel depressing member with the die member.

8. In a phonograph record die, the combination of a die member having ascrew threaded opening therein, a matrix having a central apertureconcentric with the screw threaded opening in the die member and ofgreater diameter than said opening, the Walls of the aperture in thematrix being beveled, and a label depressing member occupying theaperture in the matrix and having a beveled periphery fitting thebeveled Walls of the aperture in the matrix,

' said label depressing member projecting at v the exposed face of thematrix, the perlphery of the projecting portion of the label depressingmember being beveled reversely With respect to the first mentionedbeveled portion of said member, the label deplressin member having acentral screw t reade boss engaging the screw threaded opening in thedie member.

9. In a molding die compr-isinga pair of members adapted to be broughtinto pressing engagement, a punch secured to depressing members andlprovided with a' beveled flange at the base thereof, the other labeldepressing member having an opening disposed to receive the punch andsurrounded by a beveled annulus. f

11. In a phonograph record die, the vcomlbination of opposite diemembers, centrally apertured matrices carried'by the die members, alabel depressing member occupying the aperture in each matrix and havinga portion projecting at the exposed face of the matrix, means carried byeach label depressing member for connecting the same with .the adjacentdie, there being an inter- `engagement between each matrlx and its labeldepressing member to secure the matrix to its die, a punchcarriedpcentrally by one\of the label depressing members and providedwith a beveled base at the exposed fac-e of said label. depressingmember, the opposite label depressing member having an opening toreceive the punch and. rovided/with a beveled annulus surroun ing saidopening. e

' .j JOSEPH W. BISHOP.

